:root{
    --bg:#F6EDE4;--deep:#E8D8C8;--card:#FFF8F2;--soft:#F0E4D6;--ink:#1A1612;
    --text:#2A241C;--muted:#5A5048;--aux:#7A7068;--orange:#E07030;--copper:#B06030;
    --line:rgba(26,22,18,.12);--accent-line:rgba(224,112,48,.50);--shadow:0 12px 28px rgba(26,22,18,.10)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;height:auto;object-fit:contain;object-position:center}
.top-strip{position:fixed;z-index:90;top:0;left:0;right:0;height:20px;background:var(--ink);color:var(--bg);font-size:12px}
.top-strip-inner,.site-head-inner,.quick-nav-inner,.footer-inner{max-width:960px;margin:0 auto;padding:0 16px}
.top-strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}
.tiny-brand{font-weight:700;letter-spacing:.05em;position:relative}.tiny-brand::after{content:"";position:absolute;inset:-12px -6px}.search-open{border:0;background:transparent;color:var(--bg);height:20px;min-width:44px;padding:0 4px;font-size:12px;position:relative}.search-open::after{content:"";position:absolute;inset:-12px -4px}
.site-head{position:fixed;z-index:88;top:20px;left:0;right:0;height:54px;background:var(--card);border-bottom:1px solid var(--accent-line)}
.site-head-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand-link{min-width:44px;height:44px;display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;color:var(--ink)}
.brand-image-slot,.footer-logo-slot,.panel-logo-slot{display:inline-flex;align-items:center;justify-content:center;min-width:24px;min-height:24px}.brand-image,.footer-logo,.panel-logo{height:24px;width:auto;display:block}
.brand-image-slot:empty + .brand-fallback{display:inline}.brand-image-slot:not(:empty) + .brand-fallback{display:none}
.head-actions{display:flex;align-items:center;gap:8px}.app-link,.menu-open{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;border-radius:4px;font-size:14px}.app-link{border:1px solid var(--orange);background:var(--card);color:var(--ink)}.menu-open{border:0;background:linear-gradient(135deg,var(--ink) 0%,var(--orange) 100%);color:var(--card)}
.quick-nav{position:fixed;z-index:86;top:74px;left:0;right:0;height:46px;background:var(--card)}
.quick-nav-inner{height:46px;display:flex;align-items:center;gap:24px}.quick-item{display:flex;align-items:center;gap:8px;height:44px;font-size:13px;color:var(--text)}.quick-square{width:18px;height:18px;border:1px solid var(--ink);border-radius:2px;background:transparent}.quick-item.is-current .quick-square{background:var(--orange);border-color:var(--orange)}
.page-shell{padding-top:120px}.site-main{max-width:960px;margin:0 auto;padding:30px 16px 70px;min-height:60vh}h1,h2,h3,p{margin-top:0}h1{font-size:24px;line-height:1.3;color:var(--ink);margin-bottom:14px}h2{font-size:20px;line-height:1.4;color:var(--ink);margin-bottom:12px}h3{font-size:16px;line-height:1.45;color:var(--ink);margin-bottom:8px}p{margin-bottom:14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.kicker{font-size:12px;letter-spacing:.12em;color:var(--copper);font-weight:800;text-transform:uppercase;margin-bottom:8px}.section{margin-top:42px}.section-tight{margin-top:28px}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{min-height:42px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;border-radius:4px;font-size:14px;font-weight:700}.btn-primary{background:linear-gradient(135deg,var(--ink) 0%,var(--orange) 100%);color:var(--card)}.btn-secondary{background:var(--card);color:var(--ink);border:1px solid var(--orange)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(224,112,48,.35);outline-offset:2px}.btn:hover,.app-link:hover,.quick-item:hover,.footer-groups a:hover{transform:translateY(-1px)}
.card{background:var(--card);border:1px solid var(--line);border-radius:4px;box-shadow:var(--shadow)}.media-slot{background:var(--soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot:empty::after{content:"";display:block;min-height:100%}
.hero-index{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.hero-index a{background:var(--orange);color:var(--card);padding:8px 12px;border-radius:3px;font-size:13px;font-weight:700}.home-intro{padding:8px 0 12px}.home-intro .lead{max-width:820px}.slant-row{display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:22px;align-items:center;background:var(--soft);border:1px solid var(--line);padding:18px;clip-path:polygon(2% 0,100% 0,98% 100%,0 100%)}.slant-row .media-slot{height:176px;background:var(--card)}.slant-row .media-slot img{max-height:174px}.dual-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.story-card{padding:18px}.story-card .media-slot{height:180px;margin:-2px -2px 15px}.story-card .media-slot img{max-height:178px}.rolled-pages{display:grid;grid-template-columns:1fr 1fr;gap:20px}.roll-page{position:relative;background:var(--card);border:1px solid var(--accent-line);padding:20px 18px 22px;box-shadow:8px 8px 0 var(--deep)}.roll-page::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--orange)}.roll-page .media-slot{height:170px;margin-bottom:14px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.shelf-card{padding:18px;border-top:4px solid var(--orange)}.shelf-head{display:flex;align-items:center;gap:16px;margin-bottom:16px}.shelf-head .media-slot{width:180px;height:110px;flex:0 0 180px}.phase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.phase{padding:16px;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--orange)}.phase-media{height:160px;margin-bottom:14px}.status-list{display:grid;gap:12px}.status-item{display:grid;grid-template-columns:130px 1fr;gap:16px;align-items:center;background:var(--card);border:1px solid var(--line);padding:14px 16px}.status-badge{background:var(--ink);color:var(--card);padding:8px 10px;text-align:center;border-radius:3px;font-size:13px}.status-badge.orange{background:var(--orange)}.app-split{display:grid;grid-template-columns:minmax(220px,320px) 1fr;gap:28px;align-items:center}.app-visual{height:320px}.app-icon-row{display:flex;align-items:center;gap:12px}.app-icon-slot{width:52px;height:52px;background:var(--card);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}.app-icon-slot img{width:48px;height:48px}.late-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.late-card{padding:18px}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini article{background:var(--card);border:1px solid var(--line);padding:14px}.brand-block{background:var(--ink);color:var(--card);padding:24px;border-radius:4px}.brand-block h2,.brand-block h3{color:var(--card)}
/* inner page layouts */
.page-heading{margin-bottom:26px}.centered-heading{text-align:center}.centered-heading .summary{margin-left:auto;margin-right:auto}.page-heading .summary{max-width:800px;color:var(--muted)}.two-feature{display:grid;grid-template-columns:1fr 1fr;gap:18px}.feature-block{padding:20px}.feature-block .media-slot{height:210px;margin-bottom:14px}.related-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.related-links a{background:var(--soft);border-left:3px solid var(--orange);padding:12px 14px}
.slant-list{display:grid;gap:16px}.slant-entry{display:grid;grid-template-columns:240px 1fr;gap:18px;align-items:center;background:var(--card);border:1px solid var(--line);padding:14px 16px;transform:skewX(-1.2deg)}.slant-entry>*{transform:skewX(1.2deg)}.slant-entry .media-slot{height:150px}
.scroll-papers{display:grid;gap:18px}.paper{background:var(--card);padding:20px 22px;border:1px solid var(--line);box-shadow:10px 0 0 var(--deep);position:relative}.paper::after{content:"";position:absolute;right:-1px;top:0;width:8px;height:100%;background:linear-gradient(var(--orange),var(--copper))}.paper .media-slot{height:200px;margin-bottom:16px}
.single-explain{max-width:760px;margin:0 auto}.single-explain .media-slot{height:260px;margin:16px 0 24px}.single-explain section{padding:18px 0;border-bottom:1px solid var(--line)}
.timeline-three{display:grid;gap:14px}.timeline-block{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px;background:var(--card);border:1px solid var(--line)}.timeline-label{font-weight:800;color:var(--orange);font-size:18px}.timeline-block .media-slot{height:160px;margin-bottom:12px}
.progress-list{display:grid;gap:12px}.progress-row{background:var(--card);border:1px solid var(--line);padding:16px}.progress-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.progress-mark{font-size:13px;font-weight:800;color:var(--card);background:var(--ink);padding:4px 9px;border-radius:3px}.progress-mark.orange{background:var(--orange)}.progress-row .media-slot{height:180px;margin:12px 0}
.memo-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.memo{background:var(--card);border:1px solid var(--line);padding:18px}.memo ul{padding-left:20px;margin:10px 0 0}.memo .media-slot{height:200px;margin-bottom:14px}
.method-steps{counter-reset:step;display:grid;gap:14px}.method{counter-increment:step;background:var(--card);border:1px solid var(--line);padding:18px 18px 18px 72px;position:relative}.method::before{content:counter(step);position:absolute;left:18px;top:18px;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--orange);color:var(--card);font-weight:800}
.topic-list{display:grid;gap:12px}.topic{display:grid;grid-template-columns:180px 1fr;background:var(--card);border:1px solid var(--line)}.topic strong{display:flex;align-items:center;justify-content:center;background:var(--ink);color:var(--card);padding:16px;text-align:center}.topic div{padding:16px}.topic:nth-child(even) strong{background:var(--orange)}
.center-stack{max-width:780px;margin:0 auto;display:grid;gap:16px}.center-card{text-align:center;background:var(--card);border:1px solid var(--line);padding:22px}.center-card .media-slot{height:210px;margin-bottom:16px}.center-card p{text-align:left}
.app-page-grid{display:grid;grid-template-columns:320px 1fr;gap:28px;align-items:start}.app-page-visual{height:320px;position:sticky;top:142px}.app-detail{display:grid;gap:14px}.app-detail article{background:var(--card);border-left:4px solid var(--orange);padding:16px}
.install-flow{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.install-step{background:var(--card);border:1px solid var(--line);padding:18px}.install-step b{display:inline-block;background:var(--orange);color:var(--card);padding:3px 8px;border-radius:3px;margin-bottom:8px}
.terms{display:grid;gap:18px}.term-section{background:var(--card);border-top:4px solid var(--orange);padding:20px}.term-section ul{padding-left:20px;margin-bottom:0}.help-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.help-box{background:var(--card);padding:18px;border:1px solid var(--line)}
.faq-list{display:grid;gap:14px}.faq-item{background:var(--card);border:1px solid var(--line);padding:18px}.faq-item h2{font-size:16px;margin-bottom:8px}.contact-lanes{display:grid;gap:14px}.contact-lane{display:grid;grid-template-columns:150px 1fr;background:var(--card);border:1px solid var(--line)}.contact-lane h2{margin:0;padding:18px;background:var(--soft)}.contact-lane div{padding:18px}.about-banner{height:200px;margin-bottom:22px}.about-statement{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}.about-card{background:var(--card);border:1px solid var(--line);padding:20px}.about-dark{background:var(--ink);color:var(--card);padding:22px}.about-dark h2{color:var(--card)}.about-cover{height:120px;margin-bottom:16px;background:var(--soft)}
.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--orange);font-size:13px;padding:34px 0 calc(36px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:8px;margin-bottom:24px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h2{font-size:14px;color:var(--bg);margin-bottom:10px}.footer-groups a{display:flex;align-items:center;min-height:44px;color:var(--bg);opacity:.88;padding:3px 0}.footer-note{margin:24px 0 8px;color:var(--bg);opacity:.88}.footer-copy{margin:0;color:var(--bg);opacity:.7}
.overlay{position:fixed;z-index:110;inset:0;background:rgba(26,22,18,.46);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.menu-panel{position:fixed;z-index:120;top:84px;left:50%;width:320px;max-height:360px;transform:translate(-50%,-14px);background:var(--card);border:1px solid var(--accent-line);box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;border-radius:5px;overflow:hidden}.menu-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.panel-top{height:50px;padding:0 12px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.panel-brand{display:flex;align-items:center;gap:8px}.panel-close,.search-head button{border:1px solid var(--orange);background:var(--card);color:var(--ink);min-height:36px;padding:0 12px;border-radius:3px}.menu-scroll{max-height:308px;overflow-y:auto;padding:10px}.menu-group{margin-bottom:10px}.menu-group h2{font-size:13px;margin:6px 8px;color:var(--copper)}.menu-group a{display:block;padding:8px;border-radius:3px}.menu-group a:hover{background:var(--soft)}.menu-group strong{display:block;font-size:14px}.menu-group span{display:block;color:var(--aux);font-size:12px}
.search-panel{position:fixed;z-index:121;top:74px;left:0;right:0;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{max-width:720px;margin:0 auto;background:var(--card);border:1px solid var(--accent-line);box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.search-card label{display:block;color:var(--muted);margin-bottom:8px}.search-card input{width:100%;height:44px;border:1px solid var(--line);background:white;color:var(--ink);border-radius:3px;padding:0 12px}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-presets a{min-height:44px;padding:8px 12px;background:var(--soft);border:1px solid var(--line);border-radius:3px;display:inline-flex;align-items:center}.locked{overflow:hidden}.mobile-bottom{display:none}
@media (max-width:720px){
    .quick-nav{display:none}.page-shell{padding-top:74px}.site-main{padding:22px 16px 82px}.top-strip-inner,.site-head-inner{padding-left:16px;padding-right:16px}.head-actions{gap:6px}.app-link,.menu-open{padding:0 11px}
    .dual-cards,.rolled-pages,.shelf-cards,.phase-grid,.late-grid,.faq-mini,.two-feature,.memo-list,.install-flow,.help-columns,.about-statement{grid-template-columns:1fr}.slant-row,.slant-entry,.status-item,.timeline-block,.topic,.contact-lane,.app-split,.app-page-grid{grid-template-columns:1fr}.slant-row{clip-path:none}.slant-row .media-slot{height:176px}.shelf-head{display:block}.shelf-head .media-slot{width:100%;height:150px;margin-bottom:12px}.phase-grid{gap:10px}.status-item{gap:10px}.app-visual,.app-page-visual{height:300px}.app-page-visual{position:static}.topic strong,.contact-lane h2{justify-content:flex-start;text-align:left}.footer-groups{grid-template-columns:1fr 1fr}.menu-panel{top:80px;width:88%;max-height:360px}.search-panel{top:0;bottom:0;background:var(--ink)}.search-card{min-height:100%;max-width:none;margin:0;background:var(--ink);color:var(--card);border:0;padding:24px 16px}.search-card label,.search-head strong{color:var(--card)}.search-head button{background:transparent;color:var(--card)}.search-card input{background:var(--card)}.search-presets a{background:transparent;color:var(--card);border-color:rgba(255,248,242,.22)}
    .mobile-bottom{position:fixed;z-index:80;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--card);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-current{background:var(--orange);color:var(--ink);font-weight:800}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}
}
@media (max-width:420px){.footer-groups{grid-template-columns:1fr 1fr}.page-heading{margin-bottom:20px}.related-links{grid-template-columns:1fr}.contact-lane h2,.contact-lane div{padding:14px}.app-link{font-size:13px}.menu-open{font-size:13px}}